[llvm] [AMDGPU] Split struct kernel arguments (PR #133786)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,373 @@
+//===--- AMDGPUSplitKernelArguments.cpp - Split kernel arguments ----------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// \file This pass flats struct-type kernel arguments. It eliminates unused
+// fields and only keeps used fields. The objective is to facilitate preloading
+// of kernel arguments by later passes.
+//
+//===----------------------------------------------------------------------===//
+#include "AMDGPU.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/SetVector.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/IR/IRBuilder.h"
+#include "llvm/IR/Module.h"
+#include "llvm/InitializePasses.h"
+#include "llvm/Pass.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Transforms/Utils/Cloning.h"
+
+#define DEBUG_TYPE "amdgpu-split-kernel-arguments"
+
+using namespace llvm;
+
+namespace {
+static llvm::cl::opt<bool> EnableSplitKernelArgs(
+    "amdgpu-enable-split-kernel-args",
+    llvm::cl::desc("Enable splitting of AMDGPU kernel arguments"),
+    llvm::cl::init(false));
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arsenm wrote:

Don't need the llvm::s 

https://github.com/llvm/llvm-project/pull/133786